Incandescing-mantle gasolene-lamp.



B. S. NEWBOLD.

INGANDESOING MANTLE GASOLENE LAMP.

APPLICATION FILED NOV. 9, 1911.

1,072,354. Patented Sept. 2, 1913.

avwe/wtom QMMM COLUMBIA PLANOGRAPH CO.,WASH|NOTON. D. c.

UNEHTED tdTriES PATET OFFICE.

EUGENE S. NEWBOLD, OF BALTIMORE, MARYLAND, ASSIG-NOR T AMERICAN STREET LIGHTING COMPANY, 01? BALTIMORE, MARYLAND, A CORPORATION OF MARYLAND.

INCANDESCING-MANTLE GASOLENE-LAMP.

Specification of Letters Patent.

Patented Sept. 2, 19.13.

. Application filed November 9, 1911. Serial No. 659,440.

To all whom it may concern:

lie it known that I, EUGENE S. Nnwnono, a citizen of the United States, residing at 831 Greemnount avenue, in the city of Baltimore and State of Maryland, rave invented certain new and useful Improvements in lncandescingMantle Gasolene-l'nunps, of which the following is a specification.

This invention has for its object to provide a lamp of very simple construction that will operate with great relialoility and high eiliciency, with light hydrocarbon from a suitable reservoir (preferably a tank under pressure) fed through a vaporizing chamber heated by the lamp, to a suitable mixer, whence the mixture is led to and discharged within an incandescing mantle.

My invention will be fully understood upon reference to the accompanying drawing, wherein,

Figure 1 is a vertical section of a lamp embodying the several features of my present invention; Fig. 2 is a section on the line 22, Fig. 1, looking downward; and Fig. 3 is a section on the line 33, Fig. 1, looking upward.

A main feed pipe 1, preferably supported immediately above and resting upon a light and heat reflecting crown sheet 2, is fed from a relatively smaller pipe 3, leading from a suitable reservoir (preferably a tight reservoir) 4, which may contain a certain quantity of gasolene or other suitable light l'iydrocarbon and which may be put under pressure by forcibly introducing air through a port 5. The large pipe 1 is formed into a coil 6, preferably flattened in the direction of its radius so as to increase the vertical dimension of the coil and increase the area of the tubular wall directly exposed to heat from the lamp. Leading from the coil 6, near its lower end, but at a point slightly removed therefrom, as shown in Fig. 3, is a small gas outlet pipe 7, which terminates in a nipple 8 having a minute orifice 8, through which the gas is discharged in a very line jet and at a relatively high velocity, immediately beneath the unobstructed open end 9- of a mixing tube 9,

which connects through a suitable elbow 10 with a downtake pipe 11 that extends centrally tl'irough the coil 6 and terminates in a discharge nozzle 12, having perforated lower end 12, and located within the, mantle 13, which is provided with known form of attaching and supporting means 18, through the medium of which the mantle can be indirectly sustained by the shoulder provided by the nozzle 1:2.

let represents a housing that rises from the plate 2, and has a lower reduced portion 1 surrounding the downtake pipe 11; said housing having, at an elevation somewhat above the inlet end of the mixing pipe 9, a lateral enlargement 141;", which adapts it to surround the whole of the upper portion of the mixture conduit. This enlargementof the housing forms an oll'set 14, which provides a support for a shoulder f)", adjustably held by a set screw 9" that is accessible through a closed aperture 1 1 in the housing 14. The entire mixture conduit 9, 10, 11 receives its vertical support from the collar 9", although sustained against lateral displace- .ment in part by the protrusion of its end 9 through the offset LP, and in part by the coil 6, in which the tube 11 fits, which coil is in turn sustained upon the plate 2. 3y adjusting the mixture conduit vertically, permitted by loosening the screw 9, the air inlet 9 may be brought to exactly proper distance from the jet nipple 8 to insure proper proportioning of the air sucked into the inlet 9 by the gas jet; and when such adjustment is made, the tube 11 slides in the coil 6. The entire range of adjustment is so slight as to render immaterial the fact that the mantle will be raised or lowered relatively to the coil (3 and the reflecting plate 2.

The whole of the tube 1 is in such relation to the plate 2 as to preliminarily heat the hydrocarbon contained within it, though the high temperature which completely gasifies the fuel alone will be imparted as the fuel flows through the coil (3. By having the tube 1 and the coil 6 of large transverse dimension relatively to the feed pipe 3 and the gas outlet 7, a considerable body of fuel is maintained at all times in the heating chamber and the proportion of th incoming cold fuel thereto is so small as to avoid chilling the vaporizing chamber, and the supply of gas seeking escape through the minute orifice 8 thus becomes cumulative or builds up so as to insure a very steady and brilliant action of the lamp. By the tube 11. passing downward through the coil, 6, the mixture absorbs sufficient units of heat to greatly favor combustion and consequent incandescing of the mantle.

Vhile the housing 14 preferably terminates in a dscharge flue 14 it will neverthe-- less keep the entire mixture conduit warm: and correspondingly favor illumination. By]: the offset in the housing 14, the air and gas inlet are subjected to atmospheric tempera- I ture and kept sufliciently cool to prevent back-firing, which would be likely to take place if the housing llsurrounded .the gas nipple and the air inlet.

By having the gas pipe 7 tapped into and leading laterally from the coil 6, a short distance from the lower end 6 the result is further favored in that it leaves a dead end to the coil exposed to great heat, against which the fuel impinges and by which the resultant vapor must be deflected back to the gas pipe.

I claim 1. In a liquid fuel lamp, a burner, a plate above the burner, a vaporizing pipe supported on said plate and terminating in a coil extending through the plate, a gas ,pipe of less cross sectional area than the vaporizing pipe leading from said coil and terminating in a reduced discharge orifice, and a mixture conduit comprising an air inlet pipe immediately above the said orifice and a pipe leading upwardly from said air inlet and thence downwardly through the vaporizing coil and communicating with the burner.

2. In a liquid fuel lamp, the combination of a burner, a plate above the burner,a housing extending upwardly from said plate and having a lateral ofiset therein providing a,

supporting wall, a gas tube extending up wardly through the plate outside of the housing, and a mixture conduit comprising an air intake immediately above the gas tube and receiving gas therefrom, outside of the housing, and extending thence upwardly through and supported by the wall of the housing offset and thence downwardly through the housing to the burner; said Qmixture conduit having a collar through which it rests upon thesupporting wall and said collar being adjustable.

3. In a liquid fuel lamp, the combination of a burner, a plate above the burner, a housing extending upwardly from said plate and having a lateral offset therein providing a supporting wall, a gas tube extending upwardly through the plate outside of the housing, and a mixture conduit comprising an air intake immediately above the gas tube and receiving gas therefrom, outside of the housing and extending thence upwardly through and supported by the wall of the housing offset and thence downwardly through the "housing to the burner; said mixture conduit being provided with a collar through which it receives its support on the wall of the offset and being constructed to receive and support the mantle at its lower end.

The foregoing specification signed at VVas'hington, D. (3., this 8 day of April, 1911.

EUGENE S. NEVVBOLD. YVitnesses:

EDWIN 'S. OLAmrson, IDA T. STANLEY.

Washington,

each, by addressing the :Commissioner of Patents, 

